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2 years ago

12

To win a prize in a math contest, an individual must correctly fill in the blank below. (−3)(4−5)= [blank] −−−−−−(−3)(4−5)= [bla

nk] _ Enter your answer as a number, like this: 42

1 answer:

andreyandreev [35.5K]2 years ago

5 0

Answer:

3

Step-by-step explanation:

the answer is 3 because pedmas so the first is in the parentheses so we subtract 4 and 5 which is -1 so -1 times -3=3

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Using trig how do you answer this

Aneli [31]

Answer:

62.73° or 1.09 radians

Step-by-step explanation:

SOH CAH TOA

sin = $\frac{opposite}{hypotenuse}$ , so sin (?) = $\frac{8}{9}$

this means that ? = $sin^{-1}(\frac{8}{9})$ or ? = arcsin( $\frac{8}{9}$ ), depending on what calculator you have

plugging in $sin^{-1}(\frac{8}{9})$ or arcsin( $\frac{8}{9}$ ) into calculator will get you

62.73° or 1.09 radians

use the corresponding answer depending on if the question asks for degrees or radians

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3 years ago

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7. Which of these polynomial functions gives the number of lights in a hexagonal rig (six sides) with n rows? (Hint: Look for a

morpeh [17]

Thank you for posting your question here at brainly. I hope the answer will help you. Feel free to ask more questions.
Below are the answers:

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3 years ago

1.325 to the nearest hundreths

12345 [234]

Its 1.33 because you round up if its 5 or greater

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3 years ago

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Which exspression is equivalent to :

dlinn [17]

Answer:

C

Step-by-step explanation:

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3 years ago

Find the measure of Angle B<br><br> A. 50°<br> B. 55°<br> C. 60°<br> D. 65°

kondaur [170]

Option B. 55° is the correct answer

Step-by-step explanation:

"The sum of interior angles of a triangle is always 180°"

Given

m∠A=(3x+1)°

m∠B=(2x-1)°

m∠C = 40°

We know that

m∠A+m∠B+m∠C=180°

Putting the values of angles

$(3x+1) +(2x-1) +40 = 180\\3x+1+2x-1+40 = 180\\5x+40=180\\$

Subtracting 40 from both sides

$5x+40-40=180-40\\5x=140$

Dividing both sides by 5

$\frac{5x}{5} = \frac{140}{5}\\x=28$

We have to find Angle B,

So

m∠B = 2x-1 = 2(28)-1 = 56-1 = 55°

Hence,

m∠B=55°

Option B. 55° is the correct answer

Keywords: Triangle, Interior angles

Learn more about triangles at:

#learnwithBrainly

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3 years ago